html,
body,
ul,
li,
ol,
dl,
dd,
dt,
p,
h1,
h2,
h3,
h4,
h5,
h6,
form,
fieldset,
legend,
img {
  margin: 0;
  padding: 0;
}
body {
  outline: none;
  background-color: #fff;
  height: 100%;
  max-width: 7.5rem;
  margin: 0 auto;
}
li,
ul {
  margin: 0;
  padding: 0;
  border: none;
}
li,
ul {
  list-style-type: none;
}
img {
  border: 0;
  border: none;
  width: 100%;
}
a,
a:hover,
a:visited {
  text-decoration: none;
}
a {
  color: #000;
}
a:hover,
a:focus {
  color: #333;
}
#Nav_bar {
  height: 44pt;
  padding: 0 0.2rem;
  background: #fff;
  color: #000;
  font-size: 0.28rem;
}
#Nav_bar .left {
  width: 20%;
  height: 44pt;
  float: left;
  padding-top: 0.25rem;
}
#Nav_bar .left img {
  width: 0.2rem;
  height: 0.38rem;
}
#Nav_bar .center {
  width: 60%;
  height: 0.88rem;
  float: left;
  font-size: 0.36rem;
  text-align: center;
  line-height: 0.88rem;
}

#content {
  width: 6.9rem;
  overflow: auto;
  padding: 0 0.3rem;
}
#content .txt01 {
  width: 100%;
  min-height: 1.08rem;
  border-bottom: #dfdfdf solid 0.01rem;
  float: left;
  line-height: 1.08rem;

  font-weight: Regular;
  color: #5f5f5f;
  font-size: 15pt;
}
.r_but {
  width: 95%;
  height: 0.98rem;
  bottom: 20px;
  background: #2d9dff;
  line-height: 0.98rem;
  border: none;
  font-size: 0.32rem;
  color: #fff;
  text-align: center;
  margin-left: 0.2rem;
  border-radius: 4pt;
  padding: 0.5pt;
}
select,
input,
option,
textarea {
  font-size: 0.28rem;
  outline: none;
  width: 70%;
  height: 1rem;
  float: right;
  margin-right: 0.1rem;
  border: none;
  direction: rtl;
  text-align: right;
}
select {
  /*Chrome和Firefox里面的边框是不一样的，所以复写了一下*/

  /*很关键：将默认的select选择框样式清除*/
  appearance: none;
  -moz-appearance: none;
  -webkit-appearance: none;

  /*在选择框的最右侧中间显示小箭头图片*/
  background: url(./dazhankai.png) no-repeat scroll right center transparent;

  /*为下拉小箭头留出一点位置，避免被文字覆盖*/
  padding-right: 14px;
}
/* .txt01 label {
  float: right;
  width: 13%;
  height: 0.48rem;
  text-align: right;
  margin-top: 0.3rem;
  vertical-align: middle;
  line-height: 0.48rem;
  margin-left: 0.8rem;
}
.txt01 span {
  margin-bottom: -0.1rem;
}
.txt01 a {
  float: right;
  height: 1rem;
  width: 80%;
  text-align: right;
  color: #999;
} */
/*弹出框样式*/
#msg {
  height: 1em;
  text-align: center;
  position: fixed;
  top: 50%;
  margin-top: -1rem;
  line-height: 2rem;
  width: 100%;
}
#msg span {
  color: #ffffff;
  background: rgba(0, 0, 0, 0.5);
  height: 1.5em;
  padding: 0.5em 1.5em;
  border-radius: 6px;
  font-size: 26px;
}
#btn {
  border-radius: 6px;
  position: absolute;
  bottom: 12px;
}
.head {
  font-size: 12pt;
}
.minibox {
  position: absolute;
  width: 196px;
  height: 88px;
  background: #ffffff;
  border: 1px solid rgba(212, 212, 212, 0.15);
  border-radius: 10px;
}
.minibox img {
  position: absolute;
  width: 50px;
  height: 50px;
  top: 19px;
  left: 25px;
}
.minibox span {
  position: absolute;
  width: 77px;
  height: 18px;
  font-size: 22px;
  font-family: PingFang SC;
  font-weight: 500;
  color: #4b4b4b;
  top: 35px;
  left: 92px;
}
#microbit {
  width: 54px;
  height: 33px;
}
#arduino {
  width: 56px;
  height: 26px;
}

.yuan {
  width: 13px;
  height: 13px;
}
